When you open a savings account or invest in a Certificate of Deposit (CD), the most important term you need to understand is APY (Annual Percentage Yield). Knowing your APY helps you calculate how much interest your money will earn over a year, including the power of compound interest.


What is APY (Annual Percentage Yield)?

Annual Percentage Yield (APY) reflects the real rate of return on your principal savings account balance, factoring in the effect of compounding interest over a one-year period. Unlike simple interest, APY accounts for the frequency of compounding—whether daily, monthly, or quarterly.


Why is APY Important for Savings?

  • True Returns: APY gives you the exact earnings on your deposit, including interest on interest.
  • Easy Comparison: It allows you to accurately compare high-yield savings accounts across different financial institutions.
  • Compounding Frequency: The more frequently your interest compounds, the higher your effective APY will be.

APY vs. Interest Rate: What is the Difference?

The interest rate is the basic rate of return promised by the bank without considering compounding. The APY is always slightly higher than the interest rate because it factors in compound interest accumulated throughout the year.